Asian Journal of Research in Chemistry

Macrocyclic crown ethers are excellent hosts for metal ions and are now often used for the determination of alkali, alkaline earth and transition elements. Crown ethers have a significant coordination power towards silver ion. The present paper describes synthesis and characterization of some new Ag(I) complexes with 1, 4, 7, 10, 13, 16,-hexaoxacyclooctadecane (18-crown-6 ether) and 2, 3, 11, 12-dibenzo-1, 4, 7, 10, 13, 16,-hexaoxacyclooctadeca-2, 11-diene (dibenzo18-crown-6 ether), having six donor ‘oxygen’ atoms. The organic salts used for complexation were salts of nitrophenols. Products were isolated from silver salts of all the three nitrophenols, 2-nitrophenol, 2, 4-dinitrophenol and 2, 4, 6-trinitrophenol, having general formula of [Ag. L] (Pic-), where L = 18C6/db18C6 and Pic-= Picrate anion. The bonding pattern and structure of complexes were suggested from elemental analysis, molar conductivity, UV-Vis, IR, and 1H-NMR spectral analysis.